NSA slides explain the PRISM data-collection program  —  The top-secret PRISM program allows the U.S. intelligence community to gain access from nine Internet companies to a wide range of digital information, including e-mails and stored data, on foreign targets operating outside the United States.

Apple Seeks to Trademark ‘IWatch’ in Japan for Devices  —  Apple Inc. (AAPL), the world's most valuable technology company, is seeking a trademark for “iWatch” in Japan as rival Samsung Electronics Co. readies its own wearable smartphone device.  —  The maker of iPhones is seeking protection …

Startup Investing Trends  —  Y Combinator has now funded 564 startups including the current batch, which has 53.  The total valuation of the 287 that have valuations (either by raising an equity round, getting acquired, or dying) is about $11.7 billion, and the 511 prior to the current batch have collectively raised about $1.7 billion.

Microsoft launches web-based Xbox Music, available for subscribers now  —  We expected Microsoft to launch its Xbox Music web version this week, and it appears the site is online and ready to use.  Xbox Music Pass subscribers can access the web player from music.xbox.com, with a responsive design that adapts to your browser size.

Android, Led By Samsung, Continues To Storm The Smartphone Market, Pushing A Global 70% Market Share  —  Google is grappling with an ongoing antitrust case in Europe over its online search business, and if its rivals have anything to do with it, that might extend into Google's power in the mobile sphere, too.

ZTE Open, the first Firefox OS phone for consumers, launches tomorrow for $90  —  When Mozilla said devices running Firefox OS would be cheap, we didn't know they'd be this cheap.  Telefónica has just tweeted that the ZTE Open will be launching in Spain tomorrow for €69 …

Confirmed: Nokia takes full control of Nokia Siemens Networks after buying out Siemens for $2.2B  —  Nokia has announced that it has taken full control of its telecoms equipment joint-venture Nokia Siemens Network, after it agreed to buy out partner Siemens in a €1.7 billion ($2.2 billion) deal.

Complaint Denied: Nintendo loses dispute over WiiU.com domain name  —  In February, Nintendo of America filed a cybersquatting complaint against the owner of WiiU.com with the World Intellectual Property Organization, in what seemed like a slam dunk case for the video game company.

UK's BSkyB Wins Case Against Microsoft Over Use Of “SkyDrive” Name In Europe; May Have To Drop Name Or Pay Fines  —  Microsoft went big on pushing cloud services this week at its Build conference, but today it was dealt a blow for how it might get to market them in Europe.